Stage 4.8: Enums

Enums allow you to create a new type that can have a value of several tagged elements using the enum keyword.

match helps ensure exhaustive handling of all possible enum values making it a powerful tool in ensuring quality code.

Further information:

• https://doc.rust-lang.org/rust-by-example/custom_types/enum.html
• https://doc.rust-lang.org/book/ch06-01-defining-an-enum.html